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In vivo partial reprogramming alters manifestation of age-associated molecular changes in aging mice

ABSTRACT: This SuperSeries is composed of the SubSeries listed below.

ORGANISM(S): Mus musculus

PROVIDER: GSE190986 | GEO | 2022/01/11

REPOSITORIES: GEO

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In vivo partial reprogramming alters manifestation of age-associated molecular changes in aging mice (7 months; long-term treatment)

Project description:Various length of in vivo 4F (four Yamanaka factors) partial reprogramming protocols were performed to evaluate effects of longer-term partial reprogramming in physiologically aging wild-type mice. Here, long-term (7 months) partial reprogramming was induced and transcriptional changes in various tissues were compared to age-matched, untreated mice.

2022-01-11 | GSE190983 | GEO

In vivo partial reprogramming alters manifestation of age-associated molecular changes in aging mice (10 months; long-term treatment)

Project description:Various length of in vivo 4F (four Yamanaka factors) partial reprogramming protocols were performed to evaluate effects of longer-term partial reprogramming in physiologically aging wild-type mice. Here, long-term (10 months) partial reprogramming was induced and transcriptional changes in various tissues were compared to age-matched, untreated mice.

2022-01-11 | GSE190985 | GEO

In vivo partial reprogramming alters manifestation of age-associated molecular changes in aging mice (1 months; sort-term treatment)

Project description:Various length of in vivo 4F (four Yamanaka factors) partial reprogramming protocols were performed to evaluate effects of longer-term partial reprogramming in physiologically aging wild-type mice. Here, short-term (1 months) partial reprogramming was induced and transcriptional changes in various tissues were compared to age-matched, untreated mice.

2022-01-11 | GSE190984 | GEO

In vivo partial reprogramming alters manifestation of age-associated molecular changes in aging mice

Project description:In vivo partial reprogramming alters manifestation of age-associated molecular changes in aging mice

| PRJNA789246 | ENA

In vivo partial reprogramming alters manifestation of age-associated molecular changes in aging mice (1 months sort-term treatment)

Project description:In vivo partial reprogramming alters manifestation of age-associated molecular changes in aging mice (1 months sort-term treatment)

| PRJNA789252 | ENA

In vivo partial reprogramming alters manifestation of age-associated molecular changes in aging mice (7 months long-term treatment)

Project description:In vivo partial reprogramming alters manifestation of age-associated molecular changes in aging mice (7 months long-term treatment)

| PRJNA789253 | ENA

In vivo partial reprogramming alters manifestation of age-associated molecular changes in aging mice (10 months long-term treatment)

Project description:In vivo partial reprogramming alters manifestation of age-associated molecular changes in aging mice (10 months long-term treatment)

| PRJNA789254 | ENA

In Vivo Amelioration of Age-Associated Hallmarks by Partial Reprogramming.

Project description:Aging is the major risk factor for many human diseases. In vitro studies have demonstrated that cellular reprogramming to pluripotency reverses cellular age, but alteration of the aging process through reprogramming has not been directly demonstrated in vivo. Here, we report that partial reprogramming by short-term cyclic expression of Oct4, Sox2, Klf4, and c-Myc (OSKM) ameliorates cellular and physiological hallmarks of aging and prolongs lifespan in a mouse model of premature aging. Similarly, expression of OSKM in vivo improves recovery from metabolic disease and muscle injury in older wild-type mice. The amelioration of age-associated phenotypes by epigenetic remodeling during cellular reprogramming highlights the role of epigenetic dysregulation as a driver of mammalian aging. Establishing in vivo platforms to modulate age-associated epigenetic marks may provide further insights into the biology of aging.

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Age reprogramming: cell rejuvenation by partial reprogramming.

Project description:'Age reprogramming' refers to the process by which the molecular and cellular pathways of a cell that are subject to age-related decline are rejuvenated without passage through an embryonic stage. This process differs from the rejuvenation observed in differentiated derivatives of induced pluripotent stem cells, which involves passage through an embryonic stage and loss of cellular identity. Accordingly, the study of age reprogramming can provide an understanding of how ageing can be reversed while retaining cellular identity and the specialised function(s) of a cell, which will be of benefit to regenerative medicine. Here, we highlight recent work that has provided a more nuanced understanding of age reprogramming and point to some open questions in the field that might be explored in the future.

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Metabolic reprogramming by Acly inhibition using SB-204990 alters glucoregulation and modulates molecular mechanisms associated with aging.

Project description:ATP-citrate lyase is a central integrator of cellular metabolism in the interface of protein, carbohydrate, and lipid metabolism. The physiological consequences as well as the molecular mechanisms orchestrating the response to long-term pharmacologically induced Acly inhibition are unknown. We report here that the Acly inhibitor SB-204990 improves metabolic health and physical strength in wild-type mice when fed with a high-fat diet, while in mice fed with healthy diet results in metabolic imbalance and moderated insulin resistance. By applying a multiomic approach using untargeted metabolomics, transcriptomics, and proteomics, we determined that, in vivo, SB-204990 plays a role in the regulation of molecular mechanisms associated with aging, such as energy metabolism, mitochondrial function, mTOR signaling, and folate cycle, while global alterations on histone acetylation are absent. Our findings indicate a mechanism for regulating molecular pathways of aging that prevents the development of metabolic abnormalities associated with unhealthy dieting. This strategy might be explored for devising therapeutic approaches to prevent metabolic diseases.

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